Technical data

2.1.9 Debug and Trace Interface
The ETM macro cell of the ARM946E-S can be used as a debug and trace interface in the ERTEC 200. With this
interface, the user software running on the ARM946E-S and the user data can be analyzed and traced. The ETM
module is a standard module recommended by ARM on which various available debuggers can be run. If the trace
interface is used, the LBU interface is not available (configuration setting "Trace On“, see Section 2.1.2). If the trace
interface is us
ed, the required parameter assignment of the ETM macro cell must be performed with the debugger, so
that the required pins are switched to trace functionality.
The ETM macro cell is described in documents /9/ and /10/.
2.1.10 Serial Asynchronous Interfaces
The EB 200 has an RS232 interface with a 9-pin SUB-D male connector, which is designated X7. Only the RxD and
TxD signals are lead through. The interface can be deactivated using jumper X11 11/12 (SYS_CONFIG[2]) (see also
Section 2.1.2 ).
2.1.11 General Purpose Interface (GPIO)
The GPIO interface of the ERTEC 200 consists of 45 I/O that can be divided into two groups. The GPIOs[31:0] are
multiplexed with various alternative function blocks by means of the APB bus. GPIO [31,30,1,0] can be used as inputs
with interrupt capability. Alternatively, the GPIOs[44:32] can be selected for the LBU interface using the configuration
setting (see Section 2.1.2).
Signal
Name
Function 1
Alternative
Function 2
Alternative
Function 3
Alternative
Function 4
Use (Default)
GPIO0 P1-DUPLEX_N-
LED
GPIO (interrupt-capable)
GPIO1 P2-DUPLEX_N-
LED
GPIO (interrupt-capable)
GPIO2 P1-SPEED_N-
100LED (TX/FX)
Bus error - LED
GPIO3 P2-SPEED_N-
100LED (TX/FX)
Sync error - LED
GPIO4 P1-LINK_N-LED Link Port1 LED
GPIO5 P2-LINK_N-LED Link Port2 LED
GPIO6 P1-RX_N-LED P1-TX_N-LED P1-ACTIVE_N
-LED
Activity Port1 LED
GPIO7 P2-RX_N-LED P2-TX_N-LED P2-ACTIVE_N
-LED
Activity Port2 LED
GPIO8 UART_TXD UART (Transmit Data, O)
GPIO9 UART_RXD UART (Receive Data, I)
GPIO10 UART_DCD_N GPIO
GPIO11 UART_DSR_N GPIO
GPIO12 UART_CTS_N GPIO
GPIO13 IRTE_TRIG_
TRACE_UNIT
GPIO
GPIO14 DBGACK GPIO
GPIO15 WD_WDOUT0_N GPIO
GPIO16 SPI1_SSPCTLOE GPIO
GPIO17 SPI1_SSPOE GPIO
GPIO18 SPI1_SSPRXD SPI1 (Receive Data; I)
GPIO19 SPI1_SSPTXD SPI1 (Transmit Data; O)
GPIO20 SPI1_SCLKOUT SPI1 (ClkOut Master; O)
Copyright © Siemens AG 2010. All rights reserved. 16 EB 200 Manual
Technical data subject to change Version 1.1.4